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ZTIMERSET(3) CZMQ Manual ZTIMERSET(3)

NAME

ztimerset - Class for timer set

SYNOPSIS

//  This is a draft class, and may change without notice. It is disabled in
//  stable builds by default. If you use this in applications, please ask
//  for it to be pushed to stable state. Use --enable-drafts to enable.
#ifdef CZMQ_BUILD_DRAFT_API
// Callback function for timer event.
typedef void (ztimerset_fn) (

int timer_id, void *arg); // *** Draft method, for development use, may change without warning *** // Create new timer set. CZMQ_EXPORT ztimerset_t *
ztimerset_new (void); // *** Draft method, for development use, may change without warning *** // Destroy a timer set CZMQ_EXPORT void
ztimerset_destroy (ztimerset_t **self_p); // *** Draft method, for development use, may change without warning *** // Add a timer to the set. Returns timer id if OK, -1 on failure. CZMQ_EXPORT int
ztimerset_add (ztimerset_t *self, size_t interval, ztimerset_fn handler, void *arg); // *** Draft method, for development use, may change without warning *** // Cancel a timer. Returns 0 if OK, -1 on failure. CZMQ_EXPORT int
ztimerset_cancel (ztimerset_t *self, int timer_id); // *** Draft method, for development use, may change without warning *** // Set timer interval. Returns 0 if OK, -1 on failure. // This method is slow, canceling the timer and adding a new one yield better performance. CZMQ_EXPORT int
ztimerset_set_interval (ztimerset_t *self, int timer_id, size_t interval); // *** Draft method, for development use, may change without warning *** // Reset timer to start interval counting from current time. Returns 0 if OK, -1 on failure. // This method is slow, canceling the timer and adding a new one yield better performance. CZMQ_EXPORT int
ztimerset_reset (ztimerset_t *self, int timer_id); // *** Draft method, for development use, may change without warning *** // Return the time until the next interval. // Should be used as timeout parameter for the zpoller wait method. // The timeout is in msec. CZMQ_EXPORT int
ztimerset_timeout (ztimerset_t *self); // *** Draft method, for development use, may change without warning *** // Invoke callback function of all timers which their interval has elapsed. // Should be call after zpoller wait method. // Returns 0 if OK, -1 on failure. CZMQ_EXPORT int
ztimerset_execute (ztimerset_t *self); // *** Draft method, for development use, may change without warning *** // Self test of this class. CZMQ_EXPORT void
ztimerset_test (bool verbose); #endif // CZMQ_BUILD_DRAFT_API Please add '@interface' section in './../src/ztimerset.c'.

DESCRIPTION

ztimerset - timer set

Please add @discuss section in ./../src/ztimerset.c.

EXAMPLE

From ztimerset_test method.

//  Simple create/destroy test
ztimerset_t *self = ztimerset_new ();
assert (self);
//  Adding timer
bool timer_invoked = false;
int timer_id = ztimerset_add (self, 100, handler, &timer_invoked);
assert (timer_id != -1);
int rc = ztimerset_execute (self);
assert (rc == 0);
assert (!timer_invoked);
int timeout = ztimerset_timeout (self);
assert (timeout > 0);
zclock_sleep (timeout);
rc = ztimerset_execute (self);
assert (rc == 0);
assert (timer_invoked);
//  Cancel timer
timeout = ztimerset_timeout (self);
assert (timeout > 0);
rc = ztimerset_cancel (self, timer_id);
assert (rc == 0);
timeout = ztimerset_timeout (self);
assert(timeout == -1);
//  Reset a timer
timer_id = ztimerset_add (self, 100, handler, &timer_invoked);
assert (timer_id != -1);
timeout = ztimerset_timeout (self);
assert (timeout > 0);
zclock_sleep (timeout / 2);
timeout = ztimerset_timeout (self);
rc = ztimerset_reset(self, timer_id);
assert (rc == 0);
int timeout2 = ztimerset_timeout (self);
assert (timeout2 > timeout);
rc = ztimerset_cancel (self, timer_id);
assert (rc == 0);
//  Set interval
timer_id = ztimerset_add (self, 100, handler, &timer_invoked);
assert (timer_id != -1);
timeout = ztimerset_timeout (self);
rc = ztimerset_set_interval(self, timer_id, 200);
timeout2 = ztimerset_timeout (self);
assert (timeout2 > timeout);
ztimerset_destroy (&self);
#if defined (__WINDOWS__)
zsys_shutdown();
#endif

AUTHORS

The czmq manual was written by the authors in the AUTHORS file.

RESOURCES

Main web site:

Report bugs to the email <zeromq-dev@lists.zeromq.org[1]>

COPYRIGHT

Copyright (c) the Contributors as noted in the AUTHORS file. This file is part of CZMQ, the high-level C binding for 0MQ: http://czmq.zeromq.org. This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/. LICENSE included with the czmq distribution.

NOTES

1.
zeromq-dev@lists.zeromq.org
mailto:zeromq-dev@lists.zeromq.org
03/05/2021 CZMQ 4.2.1